Question 1133464
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From the condition, 20 flowers were bought for a rupee.


Hence, the price for each flower was  {{{100/20}}} = 5 paise when bought.


To gain 25%,  20 flowers should be sold for 125 paise.


It means that each of the 20 flowers should be sold for  {{{125/20}}} = 6.25 paise.


Therefore, the number of flowers to sell for a rupee is  {{{100/6.25}}} = 16.


<U>ANSWER</U>.   16 flowers should be sold for a rupee.
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Solved.